Why is GridView SelectedIndexChanged not firing?
If you are just clicking on the row in the GridView , that will not fire the event. You have to have some kind of button in the row to click on, which will fire the RowCommand event, as well as the SelectedIndexChanged event (if the row you click is not already selected, of course).
How can I call DropDownList SelectedIndexChanged event without AutoPostBack?
[Solved] Fire DropDownList SelectedIndexChanged event without reloading page in ASP.Net. Put your DropDownList and GridView inside the Update Panel. Set the OnSelectedIndexChange Event and Set Auto Postback to true for DropDownList. You will be having the Partial Postback not full Postback.
What is SelectedIndexChanged?
The SelectedIndexChanged event occurs when the SelectedIndex has just changed. The SelectedIndexChanged event does not fire unless the AutoPostBack property is True . This object has the following properties for identifying what has changed: Index is the index of the item that was just selected.
What is Onselectedindexchanged?
The SelectedIndexChanged event is raised when the selection from the list control changes between posts to the server. A list control must persist some values between posts to the server for this event to work correctly.
How do I populate a second dropdown without postback?
hi, you can make use of Updatepanel in your page, this will not postback your page. Check this i have used it. The ControlID given in the is the Control on whose indexchanging changes the values in the second dropdown.
What is selected index?
selectedIndex is a long that reflects the index of the first or last selected element, depending on the value of multiple . The value -1 indicates that no element is selected.
What is SelectedIndex in ComboBox C#?
Gets or sets the index specifying the currently selected item. public: virtual property int SelectedIndex { int get(); void set(int value); }; C# Copy.